模溫(wen)(wen)機(ji)又(you)叫模具溫(wen)(wen)度控(kong)制機(ji),廣泛應(ying)用于塑(su)膠(jiao)成型,導光板壓(ya)鑄,橡(xiang)膠(jiao)輪胎、滾輪,化工(gong)反應(ying)釜(fu)、粘合、密(mi)煉等各行各業。從廣義方面講,叫溫(wen)(wen)度控(kong)制設備,包含加溫(wen)(wen)和冷(leng)凍兩個方面的溫(wen)(wen)度控(kong)制。
現(xian)在模(mo)(mo)溫(wen)機(ji)(ji)(ji)一般(ban)分(fen)水(shui)溫(wen)機(ji)(ji)(ji)、油溫(wen)機(ji)(ji)(ji)控制的溫(wen)度可(ke)以達到正負0.1度。標(biao)準(zhun)型水(shui)介(jie)質模(mo)(mo)溫(wen)機(ji)(ji)(ji)工作較(jiao)高(gao)溫(wen)度為120℃,高(gao)溫(wen)型水(shui)介(jie)質模(mo)(mo)溫(wen)機(ji)(ji)(ji)工作較(jiao)高(gao)180℃。水(shui)式模(mo)(mo)溫(wen)機(ji)(ji)(ji)由(you)于比較(jiao)干凈,常用于光學鏡片、注(zhu)塑成型等行業。
油(you)式(shi)模(mo)溫(wen)(wen)機(ji)又叫油(you)溫(wen)(wen)機(ji)或是(shi)油(you)加熱器,油(you)式(shi)模(mo)溫(wen)(wen)機(ji)(油(you)溫(wen)(wen)機(ji)):油(you)式(shi)模(mo)溫(wen)(wen)機(ji)分為三個等級:標準型(xing)、高溫(wen)(wen)型(xing)、超高溫(wen)(wen)型(xing),較高工作溫(wen)(wen)度分別(bie)為180℃,300℃,350℃。
其(qi)工作(zuo)原理:模溫機管路與模具油(you)道(dao)連接(jie)構成回路,導(dao)熱(re)(re)油(you)在泵的作(zuo)用(yong)下進(jin)行(xing)循環。溫度(du)(du)傳感器(qi)將數據(ju)傳送到控(kong)制系統,自動(dong)調整加熱(re)(re)/冷(leng)卻動(dong)作(zuo),控(kong)制導(dao)熱(re)(re)油(you)溫度(du)(du)。
模溫機在塑膠(jiao)行業的運用(yong)比(bi)較普(pu)遍(bian),主要作(zuo)用(yong)是(shi):
1,提高(gao)產品的(de)成型(xing)效率(lv);
2,降低(di)不(bu)良(liang)品的產生(sheng);
3,提高產(chan)品(pin)(pin)的(de)外(wai)觀,抑(yi)制產(chan)品(pin)(pin)的(de)缺(que)陷(xian);
4,加快(kuai)生產進(jin)度(du),降低能(neng)耗,節約能(neng)源(yuan)。
模(mo)溫機在壓(ya)鑄行(xing)業的運用(yong)也(ye)有很大(da)的空間(jian)(jian)(jian),特別是在鎂合(he)金,鋁(lv)合(he)金的制造(zao)中,不(bu)平均或不(bu)適當的模(mo)具溫度會(hui)導致鑄件尺寸不(bu)穩定(ding),在生(sheng)產過(guo)(guo)程(cheng)中頂出鑄件變形(xing),產生(sheng)熱壓(ya)力、黏模(mo)、表面(mian)凹陷(xian)、內縮孔(kong)及熱泡等缺(que)陷(xian)。對生(sheng)產周期也(ye)產生(sheng)影響,如填充(chong)時(shi)間(jian)(jian)(jian)、冷卻(que)時(shi)間(jian)(jian)(jian)及噴涂時(shi)間(jian)(jian)(jian)都產生(sheng)不(bu)穩定(ding)的變數。模(mo)具的壽(shou)命也(ye)會(hui)因受到過(guo)(guo)冷過(guo)(guo)熱的沖擊而導致昂貴(gui)的鋼(gang)材產生(sheng)熱裂,加速其老化(hua)。
在現(xian)代化的工(gong)廠中,因應市(shi)場的競(jing)爭,節(jie)省(sheng)人力,提(ti)高品(pin)質,降(jiang)低成本(ben)的經營(ying)策(ce)略是(shi)刻不(bu)容緩的,模(mo)(mo)溫機的使用,可(ke)使模(mo)(mo)具預(yu)熱時間減少,成品(pin)表面(mian)質量提(ti)升及可(ke)完全自動化生產。提(ti)高模(mo)(mo)具壽(shou)命是(shi)提(ti)高生產力的必要手段。
溫(wen)(wen)(wen)(wen)(wen)度(du)控(kong)(kong)制機(ji)在(zai)其(qi)他行(xing)業的(de)運(yun)用(yong)則是設(she)(she)備構(gou)成的(de)必然條件,叫(jiao)(jiao)法也不同。在(zai)PVC片材(cai)輥輪控(kong)(kong)溫(wen)(wen)(wen)(wen)(wen)中(zhong)叫(jiao)(jiao)油加熱(re)器(qi),在(zai)擠出機(ji)設(she)(she)備中(zhong)叫(jiao)(jiao)溫(wen)(wen)(wen)(wen)(wen)控(kong)(kong)裝置,在(zai)橡膠(jiao)密煉機(ji)設(she)(she)備中(zhong)叫(jiao)(jiao)溫(wen)(wen)(wen)(wen)(wen)度(du)控(kong)(kong)制系(xi)統(tong)或叫(jiao)(jiao)溫(wen)(wen)(wen)(wen)(wen)控(kong)(kong)機(ji),這些設(she)(she)備中(zhong)基本(ben)上(shang)是一(yi)個先快(kuai)速(su)升溫(wen)(wen)(wen)(wen)(wen),然后是保溫(wen)(wen)(wen)(wen)(wen)的(de)過程(cheng)。而在(zai)橡膠(jiao)設(she)(she)備中(zhong)升溫(wen)(wen)(wen)(wen)(wen)后還需要長期執行(xing)一(yi)個降溫(wen)(wen)(wen)(wen)(wen)冷(leng)卻(que)的(de)過程(cheng)。?